Finding the Fourth Proportional to 15,294,422.96, 21,106,768.55 and 10,831,972.65
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Solution
The fourth proportional to 15,294,422.96, 21,106,768.55 and 10,831,972.65 is: 14,948,451.49
Step by Step Solution
- Step 1: Write the proportion equation
15,294,422.96 : 21,106,768.55 = 10,831,972.65 : x - Step 2: Convert to fraction form
15,294,422.96/21,106,768.55 = 10,831,972.65/x - Step 3: Cross multiply
15,294,422.96x = 21,106,768.55 × 10,831,972.65 - Step 4: Simplify right side
15,294,422.96x = 228,627,939,663,480.19 - Step 5: Solve for x
x = 228,627,939,663,480.19/15,294,422.96 - Step 6: Final answer
x = 14,948,451.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.